Quick project with my five-year-old at the weekend…
IMG_20170803_070842 by W Hyde[/url], on Flickr[/img]
IMG_20170803_070856 by W Hyde[/url], on Flickr
He did most of the work himself – used his pruning saw to cut a branch (from a prunus/flowering cherry), then used the mitre saw to tidy the ends and chop into 150mm lengths. We measured the diameter of the crayons we were using and picked the right size drill bit, which was 8mm. He drilled the holes in each end (shallow hole in the flat end, and about a 60mm hole in what was going to be the pointy end – note to anyone making these, at this point you will want to mark which hole is which, as they look the same once filled with wax…).
Tried two methods for filling. First was a bit of glue in the hole then sliding the crayons in. This was a bit hit and miss, as the crayons were about 8.1mm so were very tight in some holes. Other holes were a bit larger due the variability in the boy’s drilling skills 🙂 and the crayons were a bit loose as the glue wasn’t keen on sticking to green wood.
The next method we tried was using a small stainless saucepan with a pouring lip, pop the crayons in and apply a heat gun. Then pour the molten wax into the holes. This is by far the easiest method, and results in the ‘lead’ being totally secure and well-fixed into the hole. You don’t have to worry about matching the hole diameter to the crayons, or glue not setting against green wood etc.
After that I used a knife to sharpen them (this is where you need to know in advance which end has the deep hole).
He took them to ‘show and tell’ at school, and said he’d chopped them from the pencil tree we have in our garden 😀